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using Xamarin.Forms.CustomAttributes;
using Xamarin.Forms.Internals;
using Xamarin.Forms.PlatformConfiguration;
using Xamarin.Forms.PlatformConfiguration.AndroidSpecific.AppCompat;
namespace Xamarin.Forms.Controls
{
[Preserve(AllMembers = true)]
[Issue(IssueTracker.Bugzilla, 40722, "Using FormsAppCompatActivity calls OnDisappearing on device sleep")]
public class Bugzilla40722 : TestContentPage
{
const string ButtonText_Disable = "Disable Pause/Resume events";
const string ButtonText_Enable = "Enable Pause/Resume events";
const string Instructions_Disabled = "Sleep the device, then wake it. If \"Disappearing!\" and/or \"Appearing!\" is displayed on this screen, this test has failed.";
const string Instructions_Enabled = "Sleep the device, then wake it. If \"Disappearing!\" and/or \"Appearing!\" is NOT displayed on this screen, this test has failed.";
Label _Target = new Label();
bool _sendEvents = true;
protected override void Init()
{
ToggleEvents(_sendEvents);
var instructions = new Label
{
Text = Instructions_Enabled
};
var button = new Button
{
Text = ButtonText_Disable
};
button.Clicked += (sender, e) =>
{
_sendEvents = !_sendEvents;
ToggleEvents(_sendEvents);
button.Text = _sendEvents ? ButtonText_Disable : ButtonText_Enable;
instructions.Text = _sendEvents ? Instructions_Enabled : Instructions_Disabled;
_Target.Text = "";
};
Content = new StackLayout { Children = { instructions, button, _Target } };
}
protected override void OnAppearing()
{
base.OnAppearing();
_Target.Text += "\r\nAppearing!";
}
protected override void OnDisappearing()
{
base.OnDisappearing();
_Target.Text += "\r\nDisappearing!";
}
void ToggleEvents(bool value)
{
Application.Current.On<Android>()
.SendDisappearingEventOnPause(value)
.SendAppearingEventOnResume(value);
}
}
}
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